Adjustable Table with Stable Leg Base

ABSTRACT

An adjustable table with stable leg base includes a table top, two adjustable leg frames supporting the table top on two ends thereof respectively, two leg bases supporting the two adjustable leg frames respectively, and a control crank adjusting a length of the two adjustable leg frames, wherein each of the leg bases includes a middle body portion and two triangle end body portions which are extended from two ends of the middle body portion respectively and with decreasing cross-sectional areas, wherein each two adjustable leg frames are mounted on the middle body portion of each two leg bases respectively.

NOTICE OF COPYRIGHT

A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to any reproduction by anyone of the patent disclosure, as it appears in the United States Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever.

BACKGROUND OF THE PRESENT INVENTION

Field of Invention

The present invention relates to a table, and more particularly to an adjustable table with stable leg base.

Description of Related Arts

A table is one of the most common used furniture in people's daily life and there are also many types of tables to satisfy different people with different needs.

A conventional table has a table top and table legs to support the table top. A conventional table legs have circular or quadrangle cross sections. For a general purpose, the circular or quadrangle shaped table legs are well enough to satisfy users. However, if the conventional table with the circular or quadrangle shaped table legs is a height adjustable table, on one hand, the circular or quadrangle shaped table legs are easy to be worn after frequent adjusting process. On the other hand, two adjustable components of the table legs may generate a too large or too small friction forces among contacting surfaces. If the friction forces among the adjustable components of the table legs are too large, the height adjustable process is not only arduous, but also results in overwhelm abrasion of the table legs. The overwhelm abrasion of the table legs not only affects the appearance of the table, but also reduces a life span of the table. If the friction forces among the adjustable components of the table legs are too small, the table top may not easy to be fixed and cannot sustain too much loads on the table top.

In addition, many conventional height adjustable tables have a poor stability. In order to solve the problem, some conventional height adjustable tables adds additional support frames on the table legs. However, some of the support frames have uniform diameters and are directly and completely contacting the ground. As the ground may not be flat, the additional support frames reduce the stability of the table on the contrary. Last but not least, the additional support frames on the table legs are not strength enough to support the table legs and are easy to be broke off.

It is necessary to develop an adjustable table which can overcome these disadvantages.

SUMMARY OF THE PRESENT INVENTION

The invention is advantageous in that it provides an adjustable table with stable leg base, which is stable and is capable of adjusting a height of a table top of the adjustable table with stable leg base.

Another advantage of the invention is to provide an adjustable table with stable leg base, the adjustable table with stable leg base has two stable leg bases which enhance a stability of the adjustable table.

Another advantage of the invention is to provide an adjustable table with stable leg base, the stable leg bases reduce space occupations.

Another advantage of the invention is to provide an adjustable table with stable leg base, the stable leg bases has two triangle end portions which is capable of enhancing a stability of the adjustable table and reducing space occupations.

Another advantage of the invention is to provide an adjustable table with stable leg base, which is wear-resisting and extends a life span of the adjustable table.

Another advantage of the invention is to provide an adjustable table with stable leg base, which provides a well user experience.

Another advantage of the invention is to provide an adjustable table with stable leg base, the adjustable table with stable leg base has two adjustable leg frames which have adjustable length.

Another advantage of the invention is to provide an adjustable table with stable leg base, the adjustable leg frame is wear-resisting and extends a life span of the adjustable table.

Another advantage of the invention is to provide an adjustable table with stable leg base, the adjustable leg frame enhances a stability of the adjustable table.

Another advantage of the invention is to provide an adjustable table with stable leg base, the adjustable leg frame has an octahedral configuration so as to enhance a stability of the adjustable table and is wear-resisting.

Another advantage of the invention is to provide an adjustable table with stable leg base, the adjustable table has a reinforce member which enhances a stability of the adjustable table.

Another advantage of the invention is to provide an adjustable table with stable leg base, which provides a privacy environment for users.

Additional advantages and features of the invention will become apparent from the description which follows, and may be realized by means of the instrumentalities and combinations particular point out in the appended claims.

According to the present invention, the foregoing and other objects and advantages are attained by an n adjustable table with stable leg base, comprising:

a table top,

two adjustable leg frames supporting the table top on two ends thereof respectively,

two leg bases supporting the two adjustable leg frames respectively, and

a control crank adjusting a length of the two adjustable leg frames,

wherein each of the leg bases comprises a middle body portion and two triangle end body portions which are extended from two ends of the middle body portion respectively and with decreasing cross-sectional areas, wherein each two adjustable leg frames are mounted on the middle body portion of each two leg bases respectively.

Still further objects and advantages will become apparent from a consideration of the ensuing description and drawings.

These and other objectives, features, and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings, and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an adjustable table with stable leg base according to a preferred embodiment of the present invention.

FIG. 2 is a perspective view of the adjustable table with stable leg base according to the preferred embodiment of the present invention.

FIG. 3 is a perspective view of the adjustable table with stable leg base according to the preferred embodiment of the present invention.

FIG. 4 is a perspective view of the adjustable table with stable leg base according to the preferred embodiment of the present invention.

FIG. 5 is a perspective view of the adjustable table with stable leg base according to the preferred embodiment of the present invention.

FIG. 6 is a perspective view of the adjustable table with stable leg base according to the preferred embodiment of the present invention.

FIG. 7 is a perspective view of the adjustable table with stable leg base according to the preferred embodiment of the present invention.

FIG. 8 is a perspective view of the adjustable table with stable leg base according to the preferred embodiment of the present invention.

FIG. 9 is a perspective view of the adjustable table with stable leg base according to the preferred embodiment of the present invention.

FIG. 10 is a perspective view of the adjustable table with stable leg base according to the preferred embodiment of the present invention.

FIG. 11 is a perspective view of an adjustable table with stable leg base according to another embodiment of the present invention.

FIG. 12 is a perspective view of the adjustable table with stable leg base according to the above embodiment of the present invention.

FIG. 13 is a perspective view of the adjustable table with stable leg base according to the above embodiment of the present invention.

FIG. 14 is a perspective view of the adjustable table with stable leg base according to the above embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The following description is disclosed to enable any person skilled in the art to make and use the present invention. Preferred embodiments are provided in the following description only as examples and modifications will be apparent to those skilled in the art. The general principles defined in the following description would be applied to other embodiments, alternatives, modifications, equivalents, and applications without departing from the spirit and scope of the present invention.

Referring to FIG. 1 to FIG. 10 of the drawings, an adjustable table with stable leg base according to a preferred embodiment is illustrated, wherein the adjustable table with stable leg base comprises a table top 10, two adjustable leg frames 20, two leg bases 30, a control crank 40 and a reinforce member 50. The two adjustable leg frames 20 support the table top 10 on two ends of the table top 10 respectively. Each of the two leg bases 30 support two adjustable leg frames 20 respectively. The control crank 40 adjusts a length of each of the two adjustable leg frames 20 so that a height of the table top 10 is adjustable. The reinforce member 50 connects the two adjustable leg frames 20 in the middle so as to enhance a stability of the table.

As shown in FIG. 2 to FIG. 7 of the drawings, an octahedral configuration of each of the adjustable leg frame 20 is further illustrated. Specifically, each of the two adjustable leg frames 20 comprises a first leg support 21, a second leg support 22, a first fastening member 23 and a second fastening member 24. Both of the first leg support 21, the second leg support 22, the first fastening member 23 and the second fastening member 24 have a hollow octahedral configuration. In other words, both of the first leg support 21, the second leg support 22, the first fastening member 23 and the second fastening member 24 have an octagonal cross section.

According to the preferred embodiment of the present invention, the first fastening member 23 is disposed outside of the first leg support 21 and the second leg support 22 is disposed inside of the first leg support 21. In other words, an outer wall of the first leg support 21 is contacted to the first fastening member 23 and an inner wall of the first leg support 21 is contacted to the second leg support 22. The first fastening member 23 is disposed on an end of the first leg support 21 which is close to the second leg support 22 and the second fastening member 24 is disposed on a connection joint of the first leg support 21 and the leg base 30. The second fastening member 24 enhances a connection of the adjustable leg frame 20 and the leg base 30.

According to the preferred embodiment, the first leg support 21, the first fastening member 23 and the second fastening member 24 are implemented as fixed portions of the adjustable leg frame 20 and are not moveable, while the second leg support 22 is implemented as a moveable portion of the adjustable leg frame 20. In other words, the second leg support 22 is slidable along inside of the first leg support 21 under control of the control crank 40. In this embodiment, the second leg support 22 slides along a screw inside of the first leg support 21 under control of the control crank 40, however, the screw is exemplary only and the slide manner of the second leg support 22 is not intended to be limiting.

As the second leg support 22 is slidable along inside of the first leg support 21 under control of the control crank 40 in this embodiment, a friction force generated between an outer wall of the second leg support 22 and an inner wall of the first leg support 21 has an effect on the appearance, the life span of the adjustable table and the user experience. In other words, the adjustable leg frame 20 has the octahedral configuration and a proper friction force is generated between an outer wall of the second leg support 22 and an inner wall of the first leg support 21. On one hand, there is less effect on the wear performance of the outer wall of the second leg support 22 than a conventional tetrahedral structure, as a result, the appearance of the adjustable table is remained and the life span of the adjustable table is enhanced. On the other hand, when the controlling manner of the control crank 40 is implemented as a manual manner, the proper friction force makes the adjustment process labor-saving and comfortable which enhances the user experience. Moreover, the proper friction force generated between the outer wall of the second leg support 22 and the inner wall of the first leg support makes that the adjustable leg frame 20 is more capable of sustaining loads on the table top 10.

More specifically, as shown in FIG. 3 to FIG. 7 of the drawings, the octahedral configurations of the first leg support 21, the second leg support 22, the first fastening member 23 and the second fastening member 24 are further illustrated. The first leg support 21 further comprises eight walls 211, 212, 213, 214, 215, 216, 217 and 218 connected together to form the octahedral configuration of the first leg support 21 having the octahedral cross section. The second leg support 22 further comprises eight walls 221, 222, 223, 224, 225, 226, 227 and 228 connected together to form the octahedral configuration of the second leg support 22 having the octahedral cross section. The first fastening member 23 further comprises eight walls 231, 232, 233, 234, 235, 236, 237 and 238 connected together to form the octahedral configuration of the first fastening member 23 having the octahedral cross section. The second fastening member 24 further comprises eight walls 241, 242, 243, 244, 245, 246, 247 and 248 connected together to form the octahedral configuration of the second fastening member 24 having the octahedral cross section. In other words, the shapes of the first fastening member 23 and the second fastening member 24 couple with the shapes of the first leg support 21.

Preferably, the eight walls of the first leg support 21 are axially symmetric, the second leg support 22 are axially symmetric, the eight walls of the first leg support 21 are axially symmetric and the eight walls of the first leg support 21 are axially symmetric.

Furthermore, the four walls 211, 213, 215 and 217 of the first leg support 21 are defined as primary walls of the first leg support 21 and the other four walls 212, 214, 216 and 218 of the first leg support 21 are defined as auxiliary walls of the first leg support 21. Each of the primary walls of the first leg support 21 is extended from the adjacent auxiliary walls of the first leg support 21. Each of the primary walls of the first leg support 21 is arranged at intervals with each other and the auxiliary walls of the first leg support 21 is arranged at intervals with each other.

Correspondingly, the four walls 221, 223, 225 and 227 of the first leg support 22 are defined as primary walls of the second leg support 22 and the other four walls 222, 224, 226 and 228 of the second leg support 22 are defined as auxiliary walls of the second leg support 22. Each of the primary walls of the second leg support 22 is extended form the adjacent auxiliary walls of the second leg support 22. Each of the primary walls of the second leg support 22 is arranged at intervals with each other and the auxiliary walls of the second leg support 22 is arranged at intervals with each other.

It is worth mentioning that friction forces generated between each inner contacting surfaces of the four primary walls 211, 213, 215 and 217 of the first leg support 21 and each outer contacting surfaces of the primary walls of the second leg support 22 are enough to being capable of sustaining loads on the table top 10.

As shown in FIG. 8 to FIG. 10 of the drawings, a stable arch configuration of the leg base 30 is further illustrated. The leg base 30 further comprises a middle body portion 31, a first triangle end body portion 32, a second triangle end portion 36, a first end support 33, a second end support 35, and a first adjusting member 34 and a second adjusting member 38. The adjustable leg frame 20 is mounted on the middle body portion 31 of the leg base 30. In this preferred embodiment, the first triangle end body portion 32 and the second triangle end portion 36 have a same structure. The first end support 33 and the second end support 35 have a same structure. The first adjusting member 34 and the second adjusting member 38 has a same structure.

Specifically, the first triangle end body portion 32 is extended from one end of the middle body portion 31 and the second triangle end portion 36 is extended from other end of the middle body portion 31 with a decreasing cross-sectional area. As a result, triangle configurations with decreasing cross-sectional areas of the first triangle end body portion 32 and the second triangle end portion 36 not only reduce space occupations of the leg base 30, but also enhanced a stability of the leg base 30, so that the leg base 30 is stable enough to support the adjustable leg frame 20 and the table top 10.

As shown in FIG. 8 to FIG. 10 of the drawings, the middle body portion 31, the first triangle end body portion 32 and the second triangle end portion 36 form the stable arch configuration of the leg base 30. Preferably, the middle body portion 31 has a uniform cross-sectional area. A top surface 361 of the second triangle end portion 36 is inclined downward from one end of a top surface of the middle body portion 31 and correspondingly a top surface 321 of the first triangle end body portion 32 is inclined downward from other end of the top surface of the middle body portion 31 so as to form an arch shaped top surface of the leg base 30. Preferably, a distance of two side surfaces 322 and 323 of the first triangle end body portion 32 is shorter than a distance of two side surfaces of the middle body portion 31; correspondingly, a distance of two side surfaces 362 and 363 of the second triangle end portion 36 is shorter than a distance of two side surfaces of the middle body portion 31. Preferably, a bottom surface 324 of the first triangle end body portion 32, a bottom surface of the middle body portion 31 and a bottom surface of the second triangle end portion 36 are in a same horizontal surface so as to form a flat bottom surface of the leg base 30.

According to the preferred embodiment, the first end support 33 and the second end support 35 are implemented as cylinders. One end portion of the first end support 33 is transversely and integrally extended from the first triangle end body portion 32, in this embodiment, other end portion of the first end support 33 is connected to the first adjusting member 34; however, in other embodiment, other end portion of the first end support 33 is directly contacted to a supporting surface such as the ground. Correspondingly, one end portion of the second end support 35 is transversely and integrally extended from the second triangle end body portion 36, in this embodiment, other end portion of the second end support 35 is connected to the second adjusting member 38; however, in other embodiment, other end portion of the second end support 35 is directly contacted to the ground. The present invention is not intended to be limiting in this aspect.

According to the preferred embodiment, the first adjusting member 34 and the second adjusting member 38 are implemented as cylindrical in shape. The first adjusting member 34 and the second adjusting member 38 are capable of further adjusting a height of the table top 10.

It is worth mentioning that the reinforce member 50 connected to the two adjustable leg frames 20 is preferably mounted on upper positions of the two first leg supports 21 in such a manner that the reinforce member 50 at least shelters human knees when a human sits behind the adjustable table, so that the reinforce member 50 provides a privacy environment for humans especially women wearing skirts.

Referring to FIG. 11 to FIG. 14 of the drawings, an adjustable table with stable leg base according to another embodiment of the present invention is illustrated, wherein the adjustable table with stable leg base comprises a table top 10A, two adjustable leg frames 20A, two leg bases 30A, a control crank 40A and a reinforce member 50A. Compared with the preferred embodiment of the present invention as shown in FIG. 1 to FIG. 10 of the drawings, the table top 10A, the adjustable leg frames 20A, the control crank 40A and the reinforce member 50A of this embodiment respectively have the same structure with the table top 10, the adjustable leg frames 20, the control crank 40 and the reinforce member 50 of the preferred embodiment. The main difference is the structure of the leg bases 30A. In other words, the leg bases 30A of this embodiment is an alternative mode of the leg bases 30 of the preferred embodiment.

Specifically, the leg base 30A further comprises a middle body portion 31A, a first triangle end body portion 32A, and a second triangle end portion 36A, a first end support 33A, an adjusting member 34A and a wheel component 39A. The adjustable leg frame 20A is mounted on the middle body portion 31 a of the leg base 30A. Unlike the first triangle end body portion 32 and the second triangle end portion 36 of the preferred embodiment, the first triangle end body portion 32A and the second triangle end portion 36A have a different structure in this alternative mode. However, in other embodiment, the first triangle end body portion 32A and the second triangle end portion 36A can also have a same structure and the present invention is not limited in this aspect.

More specifically, in this alternative mode, the first triangle end body portion 32A has a longer length than the second triangle end portion 36A thereof. The middle body portion 31A, the first triangle end body portion 32A and the second triangle end portion 36A form a stable arch configuration of the leg base 30A. Preferably, the middle body portion 31A has a uniform cross-sectional area. A top surface 361A of the second triangle end portion 36A is prismatic and is inclined downward from one end of a top surface of the middle body portion 31A. Correspondingly, a top surface 321A of the first triangle end body portion 32A is prismatic and is inclined downward from other end of the top surface of the middle body portion 31A so as to form a prismatic shaped top surface of the leg base 30A. Preferably, a distance of two side surfaces 322A and 323A of the first triangle end body portion 32A is shorter than a distance of two side surfaces of the middle body portion 31A; correspondingly, a distance of two side surfaces 362A and 363A of the second triangle end portion 36A is shorter than a distance of two side surfaces of the middle body portion 31A. Preferably, a bottom surface 324A of the first triangle end body portion 32A, a bottom surface of the middle body portion 31A and a bottom surface of the second triangle end portion 36A are in a same horizontal surface so as to form a flat bottom surface of the leg base 30A.

According to this embodiment, the first end support 33A and the second end support 35A are implemented as cylinders. One end portion of the first end support 33A is transversely and integrally extended from the first triangle end body portion 32A, in this embodiment, other end portion of the first end support 33A is connected to the adjusting member 34A; however, in other embodiment, other end portion of the first end support 33A is directly contacted to a supporting surface such as the ground. The adjusting member 34A is implemented as cylindrical in shape. The adjusting member 34A is capable of further adjusting a height of the table top 10A.

According to this embodiment, the wheel component 39A provides a moveable function. Specifically, the wheel component 39A comprises a wheel frame 391A and a wheel 392A. The wheel frame 391A is extended from the second triangle end portion 36A. The wheel 392A is ratable connected to the wheel frame 391A.

One skilled in the art will understand that the embodiment of the present invention as shown in the drawings and described above is exemplary only and not intended to be limiting.

It will thus be seen that the objects of the present invention have been fully and effectively accomplished. The embodiments have been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims. 

What is claimed is:
 1. An adjustable table with stable leg base, comprising: a table top, two adjustable leg frames supporting said table top on two ends thereof respectively, two leg bases supporting said two adjustable leg frames respectively, and a control crank adjusting a length of said two adjustable leg frames, wherein each of said leg bases comprises a middle body portion and two triangle end body portions which are extended from two ends of said middle body portion respectively and with decreasing cross-sectional areas, wherein each two adjustable leg frames are mounted on said middle body portion of each two leg bases respectively.
 2. The adjustable table with stable leg base, as recited in claim 1, wherein each of said leg bases has a stable arch configuration having an arch shaped top surface, wherein each top surfaces of each two triangle end body portions are respectively inclined downward from two ends of a top surface of said middle body portion so as to form said arch shaped top surface of said stable arch configuration.
 3. The adjustable table with stable leg base, as recited in claim 1, wherein each of said leg bases further comprises two cylindrical end supports, wherein said cylindrical end support is transversely and integrally extended from said triangle end body portion.
 4. The adjustable table with stable leg base, as recited in claim 2, wherein each of said two leg bases further comprises two cylindrical end supports and said cylindrical end support is transversely and integrally extended from said triangle end body portion.
 5. The adjustable table with stable leg base, as recited in claim 3, wherein each of said leg bases further comprises two adjusting member adjusting a height of said table top and connected to said corresponding cylindrical end support.
 6. The adjustable table with stable leg base, as recited in claim 4, wherein each of said leg bases further comprises two adjusting member adjusting a height of said table top and connected to said corresponding cylindrical end support.
 7. The adjustable table with stable leg base, as recited in claim 1, wherein each of said leg bases has a stable arch configuration formed by said middle body portion and said two triangle end body portions and having a prismatic shaped top surface, wherein each two triangle end body portions have prismatic top surfaces respectively inclined downward from two ends of a top surface of said middle body portion so as to form said prismatic shaped top surface of said stable arch configuration with said top surface of said middle body portion.
 8. The adjustable table with stable leg base, as recited in claim 7, wherein each of said leg bases further comprises an cylindrical end support and a wheel component, wherein said cylindrical end support is transversely and integrally extended from one end of said triangle end body portion and said wheel component is extended from other end of said triangle end body portion.
 9. The adjustable table with stable leg base, as recited in claim 8, wherein said wheel component comprises a wheel frame and a wheel, wherein said wheel frame is extended from said second triangle end portion and said wheel is ratable connected to said wheel frame.
 10. The adjustable table with stable leg base, as recited in claim 7, wherein a length of one leg base of said two leg bases is longer than the other one of said two leg bases.
 11. The adjustable table with stable leg base, as recited in claim 1, wherein each of said adjustable leg frame has an octahedral configuration having an octahedral cross section.
 12. The adjustable table with stable leg base, as recited in claim 1, wherein each of said adjustable leg frame further comprises a first leg support and a second leg support disposed inside of said first leg support and is slidable along inside of said first leg support under control of said control crank.
 13. The adjustable table with stable leg base, as recited in claim 12, wherein each first leg supports and each second leg supports have octahedral cross sections.
 14. The adjustable table with stable leg base, as recited in claim 12, wherein said first leg support further comprises four primary walls and four auxiliary walls, wherein each of said primary walls of said first leg support is extended from said adjacent auxiliary walls of said first leg support, wherein each of said primary walls of said first leg support is arranged at intervals with each other and said auxiliary walls of said first leg support is arranged at intervals with each other.
 15. The adjustable table with stable leg base, as recited in claim 12, wherein said second leg support further comprises four primary walls and four auxiliary walls, wherein each of said primary walls of said second leg support is extended from said adjacent auxiliary walls of said second leg support, wherein each of said primary walls of said second leg support is arranged at intervals with each other and said auxiliary walls of said second leg support is arranged at intervals with each other.
 16. The adjustable table with stable leg base, as recited in claim 15, wherein an outer surface of said primary walls of said second leg support is contacted to an inner surface of said primary walls of said first leg support.
 17. The adjustable table with stable leg base, as recited in claim 12, wherein each of said adjustable leg frame further comprises two fastening member respectively mounted outside of said first leg support.
 18. The adjustable table with stable leg base, as recited in claim 1, wherein said adjustable table with stable leg base further comprises a reinforce member connected between said two adjustable leg frames.
 19. The adjustable table with stable leg base, as recited in claim 12, wherein said adjustable table with stable leg base further comprises a reinforce member connected between said two adjustable leg frames.
 20. The adjustable table with stable leg base, as recited in claim 19, wherein two ends of said reinforce member are respectively connected to upper positions of said two first leg supports. 